<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
	</body>
</html>
<script type="text/javascript">
	var arr = [11,22,33,44,55,66];
	var arr2 = arr.map(function(val,index){
		// return ''
	})
	console.log(arr,arr2)
</script>